Posted 23 June 2018 - 08:27 PM
Does not sound like you had any pinking/pre ignition.
Pinking sounds similar to a couple of loose nuts/bolts rattling in the air cleaner box that was fitted to carburettor cars.
I know on the Mondeo eco petrol with powershift you can occasionally get pinking when the driver "catches the box out" or vice versa - the box keeps the revs really low and the driver is giving loads of throttle (really the box should change down one but it doesn't) you then have unacceptable low revs with high torque resulting in pinking.
When pinking starts one should immediately ease back on the throttle or change down, as if you don't, it will "encourage" piston/ring/land failure.
I had contact with a guy in the states who had piston failure on his 2L Focus ST.
He admitted that, due to the great torque from the engine he only ever really drove round in either 5th or 6th gear, so it was continually abused running at very low speed, very low revs and he just used massive throttle to make it accelerate.
Under those conditions the engine continually pinked but he totally ignored it up until engine failure.
He admitted he thought the "rattle" he had had from new was just a couple of loose exhaust nuts and bolts under the bonnet.
To top it all, when it went back to the dealer he left all the mods on it as well as the remap, and then started moaning because Ford declared the warranty null and void
BMW 320i M Sport 2019 Mineral Grey, Steptronic 8 speed ZF Auto
( Sorry but NO 2.3 Ecoboost 8 Speed Auto Mondeo's to be found!)
Focus 2018 Mk3.5, 1 Litre Ecoboost 140ps ST Line, SYNC3 Sat Nav, Parking Sensors, Colour Magnetic - Gifted to the Wife! Then Sold Aug 2019
Mondeo Mk5 Titanium 2L Ecoboost 240ps, X Pack, Body Kit, Rear Spoiler, 19" Alloys, LED Headlamps, Sony 12 Spkr Audio, Park Assist, Winter Pack, Rear Camera, Magnetic, Built Sept 2015,Sold Oct 2018.
Mondeo TitaniumX Sport 240ps 2L Ecoboost Powershift 2011 - Sold 2016 But Never Forgotten.
2007 - 2010, 4 New Focus ST225s